Oil filter



vNaw-9, 1937. J, E, H'URN 2,098,725

voIL. FILTER l Filed April 2'7, 19:55

J m l Patented Nov. 9, 1937 UNITED STATES ,PATENT-e OFFICE' assaut p om FILTER James E. Hum, Saugerties, N. Y., assigner to claims.

My invention is an oil filter, and is a full-flow filter having a special adaption to the type of engine capable of using a low grade oil, such asin a Diesel engine. Its leading object is the provision of a primary 'element for taking the full-ow of oil and ltering out abrasive and non-lubricating 4elements prior to a complete purifying process.

This invention is an improvement of, and based v upon my application S. N. 702,529; ied December 15, 1933, and includes the fundamental principles therein,

The accompanying drawing exhibits an embodiment of my invention, in which v Fig. 1- isa sectional elevation of the device show-7' g ing the internal working arrangement.

Fig. 2 is a cross section on the line 2-2 taken in the direction of the arrow.

Fig. 3 is a vertical section taken along the line .'20 33,in the direction of the arrows.

Fig.' 4 is a modified form of a sludge outlet.- As illustrated, i is the housing of the device: 2 is the cover for enclosing the top opening: 3 is 'a shoulder internal of housing; 4 is a sump por-- 23 tion tributary to then filtering means thereabove:

5 is a tubular member nxedly seated in the center of the housing; threaded at 6 in a tubular.

channel member 1;` 8 is a revolvable nut or plug set in the cover, having a bar means 9 to 'rotate the same for locking the cover to the housing, it having a threaded extension I0 for ntting into the tubular member 5; 8' is a shoulder on said plug adapted to co-act with a. gasket l8" to seal the cover when the parts are locked together. I I

is a shoulder on plug 3 adapted to position a crown member I2 on a ltering unit; I3 is a nut threaded on the .extension I0 and adapted to lock the crown I2 to the same enabling it to be lifted out when the cover is released with the plug. A bore i4 extends longitudinally thru the plug there being a portion I8 of the bore of smaller diameter than the outer portion, the Junction of the two diameters of the bore forming a valve seatv I9,

v-upon which valve seat rests a ball valve I5, ten' '45 sioned by a spring I6, and regulatable by a tension'nut I1. 'I'he diameter ofthe bore I3 is of equal diameter with' a nozzleaperture 3' in the Achannel member 1. A lateral bore I9' from one .5o side of the plug 3 to an opening into I4, forms a release to excess pressure. 20 are perforations in the wall of the tubular member i, substantially midway of its height and adjacent to the blank 'walls of a member 23 to'be hereinafter de- 55 scribed. 2l is a base-preferably 'metal-ot a laide.' De Luxe.lroducts Corporation, La Porte, Y

' Application April4 zr, 1935, semina. 18,546

(ci. 21o- 131) demountable `filtering unit; this base has its per; riphery 22 slightly less than the diameter of the housing chamber and bent to an upturn adapted to be seated upon a ridge abovethe sump l4; this base portion 2I is centrally drawn up intoA a 5 cone-shape 23 to a height substantially midway of the filtering unit, the apex of the cone adapted to snugly encircle the tubular member 5.-there being a slight flare 23' of the apex opening of the filtering structural member 2l. I provide a 10 plurality of perforations 25, in the conical wall y 23 encircling the cone at its lower extremity, the

upper of said perforations being spacedly below the perforations 20 in tube 5. I provide a member 28 penetrating and supporting aiiltering ele- 15 ment, the said supporting ymember having vits base resting upon the base of the cone 23. I pro- A vide a ltering bagV formation 24 having a ange to extend .aroundand under the up-turned edge 22 of the base 2i, the upper portion of the said 20 bag 24 having an internal columnar portion 24" adapted to extend inwardly of the ltering unit to contact and co-act with the flaredl opening 23' of the apex of the cone; and I provide a locking vdevice 28 to contact 23' and 24' thus forming a 25 substantially sealed filtering unit. `Into this formation of the conical member-2|, 23, and the bag formation 24, I place a dense amorphous mass 21 of soft absorbent and adsorbent material. I provide an outlet opening 30 in the upper 30.

wall of the housing I communicating lwith a channel 3| leading to an opening 32 communi-v cating with thecrankcase.

The member 1 into which tube 5 is threaded has an extension 1' which threads into a portion 35 33' of the housing at 34 there being in this portion of the housing an inlet opening 35 having communication under certain conditions hereinafter described to a common point 36. I'he inlet l 35 being adapted to -primarily provide for the 40 passage of the oil under pressure to a primary filtering structure hereinafter described, there being provided a means to permit the passage of the incoming oil in one direction topoint 36 and thence to the filtering element heretofore described: or in the event that the primary filtering element hereinafter described becomes clogged or rendered otherwise incapacitated then a valve 39 operable in a channel 33, tensioned by 50 a'spring 43 and a nut '41, releases under pressure and feeds directly intol 33' from there. 42 is a plug enclosing the release valve.ni'echanism.` 43 is a.n channel `leading from the entry .channel 3l .directly into a chamber 4". In the chamber 4' 55 .there is suspended a series of concentric ltering elements 44, there being open spaces 45 for the passage of oil up thru 'said spaces into contact with the walls of the depending concentric iilters: each said depending lte' consists of a pair tached to a supporting bracket. 41 which said bracket bears a multiplicity of apertures 48 providing passage from` the chamber of each depending member 44 vto an area 50 which area communicates thru a plurality of apertures 50 into the chamber of 1' whence the oil may pass out either thru 31 to the engine bearings or thru a nozzle 6' into the tube 5. The bracket 41 is supported on a shoulder 3 in the body, of the housing, and seated upon this bracket support of 41 I provide a disc 49 as a divisional means between the primary full-flow filter and the upper purifying filter. 5l ,is an outlet for the removal of sludge ingredients from the sump 4 and 52 is a release plug in 5I. 51 is an attaching plate, 58 'is a threaded aperture in the 'sump 4 whereby to release sludge accumulation and is located in a boss 53.

In Fig. 4 I show a modication of the releasing means of accumulation in sump 4 which consists in an aperture 55 in disc 49, registeringI with a conduit 55 and an aperture 55' in a chambered nut 54, which said nut has at its innerend a valve 53 so balanced that it will be automatically closed during the operation ofthe engine and automatically opened by the weight of sludge when the engine is at rest.

In connection with this type of filter it willv be recognized that in connection with the engine (which is not shown) there is a pump pumping the oil from the reservoir supply and doing it at varying pressures and volumes,and somewhere in the line between thepump and the point of connection with the filter there is an automatic yvalve provided to release when the pressureis.

,the area 50, thence thru the apertures 53' into the chamber of 1';, a minor portion passing down the chamber to the point 35 and thence thru 31 to the bearings of the engine; and a portion passing thru the constricted aperture 8 into the.

chamber of 5 where it is .emulsiiied under a given pressure regulated by the lvalve i5; from this chamber it isforced lthru the apertures 20 against the blank walls of the cone at 23 and atomized,

while at the same time; a distinct sharp changemi in direction of iiow is had downward into an exi" panding cone, during which time it precipitates the heavier elements and the lighter portion of mary filter portions 44 become clogged the presoil feeds directly into 36, one portion going directly to the bearings and the other portion go ing up thru the purifying filter.

As heretofore set forth, the invention is primarily applicable to an engine such as the Diesel engine in which low grade oils are customarily employed. Such voils frequently oxidize -with great rapidity or form large c bodies lof, oxidized or non-lubricated impurities which it is not desirable to return to the bearings. Therefore, in such an engine the device shown in my co-pending application 702,529, filed December 15, 1933, winch filters a small portion of the oil only, but filters it so thoroughly that the entire body of the oil is continually maintained in a suitable is upon better grades of lubricating oil.

The foregoing detailed description has been vgiven for clearness of understanding only, and

no unnecessary limitations should be understood therefrom, but the appended claims should be construed as broadly permissible in view of the prior art.

I claim: Y

1. In a device of the class described the comstate oi cleanliness, is not so satisfactory as it bination with Awan internal. combustion engine of 4 tached to a bracket providing free oil space between the bracket and ythe lower side of the dividing wall; open channels from the screen members into the said open space; apertures from the open space into the central tubular member below the dividing wall;I the' inlet to the housing from the engine being into the lower chamber there. being an outlet direct into the said screen chamber, and a valve controlled connection with the tubular member; a sump in thescreen chamber; an outlet fromy the tubular member to the crankcase of the engine; an outlet 1 from the sump in the screen chamber; the upper chamber containing a sump, and-assembled above the said sump a nltering cartridge consisting of a base having a conical member extending upward from the said base and an amorphoused mass of filtering material confined within av foraininous.. sack, the said cartridge suspended around the tubular member; apertures in the wall of the tubular member within the confines of the conical portion of the filtering cartridge;

- a cover for the housing having locking means dividing wall; in the lower vchamber a series of` .concentrically arranged screens dependingly atcoacting with the tubular member to lock the housing and its contents into a unit; a valve the portion 4ofthe tubular member in the upper filtering chamber; an outlet from the filtering.

chamber to the crankcase of the engine; an outlet from the sump in the upper chamber. i

`2. In combination with an internal .combustion engine, a device for screening and purifying lubricating oil during operation of the engine, comprising a housing having a first and second chamber ,divided from each other, a tubular cong aoesnzs duit extending into both chambers and having an opening to each, an inlet from the oil reservoir of the engine communicating with the tubular conduit and having a separate opening into the rst chamber, pressure controlled means for controlling entry of oil from the inlet to the tubular conduit, an outlet from the rst chamber communicating through the tubular conduit to the bearings, an oil screening device in the iirst chamberfbetween the inlet and outlet, an oil iltering means in the second chamber, and an outlet from said chamber communicating with the oil reservoir of the engine.

3. A device as set `forth in claim 2 in which means are provided within the tubular conduit for limiting the ow of oil to the ltering means.

4.V In combination with an internal combustion engine, a device for screening and purifying lubricating oil during operation of the engine, comprising a housing having a first and second chamber divided from each other, a tubular conduit communicating with both chambers, an inlet from the oil reservoir of the engine communieating with the tubular conduit and having a separate opening into the first chamber, pressure controlled means for controlling entry oi oil from the inlet to the tubular conduit, an outlet from the rst chamber communicating through the tubular conduit to the bearings, an oil screening device in the ilrst chamber between the inlet and outlet, an oil iiltering means in the second chamber, and anoutlet from said chamber communicating with the oil reservoir of. the engine. JAMES E. HURN. 

